Blue Sky Trail Marathon & Half Marathon

Hey, adventurers and endurance masters! The Blue Sky Trail Marathon & Half invites you to hit Fort Collins's original trail marathon. Brace yourselves for an epic traverse between the scenic Horsetooth Mountain Park and Devil's Backbone Open Space. With 3,500 feet of elevation swinging in the full marathon and 1,800 in the half, expect a terrain cocktail of dirt trails, technical rock obstacles, and a dash of smooth road. Whether it's your first or fiftieth trail run, the course has a challenge for everyone and a lenient nine-hour cut-off to boot. And here's the cherry on top: post-race, bask in the glory of a well-deserved barbecue and snag some cool swag from our sponsors. Time to lace up!